Jack for wireless telephony or the like



May'ES, 1925. 1,536,295

J. W. JONES JACK FOR WIRELESS TELEPHONY OR THE LIKE V Filed Aug, 11,1922 Patented May 5, 1925..

:i'osErH w. Jonas, or NEW YORK, n- Y.

JAorc non WIRELESS TELEPHONY on THE LIKE.

application filed August 11, 1922. Serial No. 581,135.

To all 'wnom it may concern.

.Be it known that I, Josnrir Jonas, citizen of the United States,resldlng n the v city, county, and State of New York, have it inventedanew and useful Jack for Wireless "Telephony or the like, of which thefollowing is a-specification.

This invention is designed primarily for service in wireless-telephoneapparatus, but

is also applicable in switchboards of ordinary telephony and, indeed, inany service involving ready establishment and dis-estah lishmeint of oneor more electric circuits. In the telephone-jacks heretofore known, the

jack comprises an angular metal plate upon whose rearward prolongationis mounted, with suitable insulation, a plurality of for wardlyextending parallel contact-spring: arranged in close proximity andparall with the rearwardly-extending telephone plug (when inserted). 'lhclose proximity of these elongated parallel oontact-springs, however,results in capacity for induction of local circuits, particularlymanifest in wireless telephony; the soldering-of the circuit-wires tothe rear ends of said contactsprings requires the service of skilledperts; and the jack-structure as a whole is unduly large and cumbersome.

lhe object of the present invention is to provide an improvedtelephone-jack that will be free from local induction, to which thecircuit-wires can be readily connected by even an amateur, and whichwill occupy a far shallower space than the former jacks. To' this end,the invention comprises broadly a jack with its contact-spring orsprings projecting rearwardly, in the same direction as the plug (wheninserted). In such arrangement the contactsprings can be and preferablyare far shorter, and spaced more widely apart, than heretofore; andthereby their capacity for local induction is eliminated, thecircuit-wires can he structure is much shallower and does not usurp somuch space in the wirelessa iparatus (or telephone-switchhoar-d)-withwhich it is associated. The invention comprises further the variousfeatures of construction and ar- .',1'angeinent hereinafter set forth ami elai mud.

,The invention will be best. uuderstoml by "reference to the ensuingdescription and the accompanying drawings, which set forth sevria ralillustrative cmhodimei'its thereof. In

drawings:

ion-sheet.

readily connected thereto, and the whole Fig. 1 represents in transversesection one preferred embodiment of the invention, designed foremployment with a single normally-opencircuit, and shown as equippedwith binding-posts for the circuit-wires;

Fig. II is a like View of a slight modification, which, instead ofbinding-posts, has simple terminals for soldering the circuit wires;

Fig. III is a transverse section of another embodiment designed for asingle normally-closed circuit;

Fig. 1V is a similar View, and Fig. V a face-view, of stillanotheremliodil'nent for two circuits; and

Fig. VI. indicates, in perspective, a plurality of jacks mounted upon aui'iitary or common base-plate and its unitary insula Referring first toFig. I, 7 represents a metal base-plate, shown as flat, and having ascrew-thread-d hole into which. is to be screwed a tubular bushing 8,whereby said base-plate may be secured against the inner face of a wallor panel 9 (shown in dotted hues),- ready for the insertion through saidbushing of the usual or any desired form terminals, here shown as ashort bindingpost, which is secured at the rear face of theinsulation-sheet, as by avscrew 13 inserted through the base-plate. 14is the complemontary jack-terminal or binding-post, secured directly tothe rear face of said insulation-sheet, as by a screw 15 insertedthrmigh a clearance-hole 16 in the base-plate. 17 is a singlerearwardly-projccting contactspring, flat and preferably quite short,which is suitably secured in electric contact with said secondjack-terminal 14, as by being clamped between the foot of said terminal14 and the rear face of said insulation-shcot by said. screw 15. Alongits rearwardly-extending portion, at 18, said contact-spririg is soshaped or distorted as to project laterally into position for electriccontact with the usual contact-ball 19 car- Stfia iitlEtlly iii-shaped.flat spring-member,

} l'0 .Z'-llli:,' quite is no: egzln he reur lace oi the in flon sheetl) :11; by a, screw ineerleiil through 21 erunre hole iii 21ml held inplace by :r nut. a rn'i 17 of said member projerts and is (lislorlecl r0extend into ihe plug while the olher end is "ie ll for 50L 'l'he othermerely ol :1 sliorli iltl(l, in L- :J'lriu Qonizurt Willi 213 by 1:.screw i ziinl D1215 eijl Willi w. hole or the like wife. are tworemwrua'allytnel-sprin v two binning 1 y, and having:

o-"uevl lo couFi'ii i'lj. i ihen liie releinilimlofl in Fig. (l co;LZH'lIillQ-LIHES 01+ into rho (irhone {or other ,a are earriexl by u nlairought inn-i inuiunl ssln'evn, the four ronnrl lhe 233 and l'he"-zcuroil re- Spring; Contact me nu plate, dflil Che oiher iwo rings.curesl unon rho llifinnlllflll" e ninelioles, well as;

ihe r 2: willyllio lour mu Iii along ll ,7 in nlzi 1: no. li'hon lorris:

'lhmahy ihe plug l'he rein emu hrezihin ll;

iiof iuv 'l'he plug will nl'her ii whose lerinir rim h :i new i .pring si l'elrpliono (or are 0:11 llll which a sheeli oi insuluiion which liesflush in :1 rabbcl. or runes in lhe rear face of :i llllll'illy melalplate which lnlter provided with ii plurality of holes 30 for thelliSmllOn (from the front) of n. lele illone-plug or plugs. To saidinsulation is SCllllQLl (as by screws lhrougli clcaranreholos in themetal plate, as already ("m ni-well) u pluriilit. y' of terminals Illone for each hole; earl! of said terminals cm or conslil Hills :1 shortrear- \\'zii.'(llyin'0 wring (similar to nionihei' ll) whil for eachiernnnzil 3i, there )8 seoureil (ill'LLLlf/ to the crn'nnon metallmseplnte n roinpleinentury ierniimil here shown as like terminal 12 oil 'ig. ll, hnrervr, binding-post such as shown in i;;. I, might heOll'llilOyBl; and for one 01. nioie of the h les, there may be two ormore conflict-springs (as indicated by Figs. Hi V) rioue embodiments ofthe invention lhus been described in great fullness of derail, hut onlyfor the sake of clezirnoss, once the invention is not limited to anyliitinn, one of said sprin s being in electric:

r1 ronneweion with said hose-plate, and the other l'hreo heng securedthrough clearzincn-liolers th rein cl rectiy in said insulation the flatrc i .rclly-projecling portions of snirl springs occupying'I'QSPOClZlVCly lanes rrl l, 001 iiilvule suhsl'ln ntially a, square,the rear cm of lwo of enid springs having latezil pro Htions bent intoparallelism. with and nnlencling as inner ends hetween the (ruler rearends of tho olher two springs, 21 strip oi. insulation limited on theinner face oi ne of the two l; Eh lllC'llilCTlCll or oulvr nioinhers.will l'\\1 inner einls living f whim-l. .rilh lll'll ollier uinl each 051' inn ouinr ends being in electric (*oul'avt will: ihe mljm-eut innerowl. and will outer eiuls lining sepziruhle lnrthor apart for lirenhine'the 'i ronuu'ls :i'l'oresnill lo." the insertion oli lhe t0lephone-plug,WllOlBlfiY the instrinnen't, such as :i lelephono whose terminals arecurried by mid plug is i1il;i( {lUCBCl into :i new circuit; comprisingthe two outer ends aforesaid.

2. The herein l0scriheal lelephone-j: roniprising ii liner-plate, anirrsulatiorrs {our renrwzirzllyqirojecting C(iiifiziebSg i'iiigi, ofwhich only one is mounted in oleetru-zil Inn like

. with said ha connection with said base-plate, while the other threeare n'iounted on said insulation" sheet, the rear ends of said foursprings being arranged in mutual parallelism, two oi said rear endsprojecting as inner ends between. the other two as outer ends, eachinner end being normally in electric contact with the adjacent outerend, and said two contacts being separable loy the introduction betweensaid outer members of the telephoneplug, and thereby the instrument eachas a telephone Whose terminals are carried by said plug beingsimultaneously introduced into a new circuit comprising said. two outerends. i

3. The herein-described telephone-jack, comprising a hose-plate, aninsolationeshect, four rearwardlyproiecting contact-springs, of whichonly one is mounted in electrical connection with aid lease-plate, Whilethe other three are Jon-tit on said. insulation sheet, the rear cut saidfour springs be ing parallel, two of said rear ends project ing as innerends between the other two as outer ends, the two inner'ends lacing outor contact with each other, but each inner end being'normahy in electriccontact with the adjacent outer one l. A; tfillpllf and plane ha.screwihrcaded a flat metal 'ing a L t and plans sheet oar lace there-'ing with the first menticned hole, a heated and enternally-threadedllow hashing engaging said screw-this hole in the haseplate for clampinglatter upon a panel, a jack-terminal n'cd, electric contact late andprojecting rear- Wardly beyond id in: ilation-sheet, a secondjack--terininel connected through a clearance space in said haseplate tothe rear face of said insulation'sheet, and a rear- Wardly-projectingcontact-spring electritally connected at the rear face of saidinsulation-sheet to said second terminal.

5. A telephone-geek comprismg a baseplate of metal having ascrew-threaded hole, a sheet of insulation secured on the rear facethereof and having a hole registering; with the firsbmentioned hole, aheaded and externally-threaded hollow bushing engaging" saidscrew-threaded hole in the lNlSO-Pliiiifi tor clamping the latter upon apanel, two complementary jack-terminals, one mounted in electric contactwith said base-plate and the other mounted upon said i nsulation-sheet,and a rearwardly-projeoting contact-spring eleetricallyconnected at therear face of said insulation-sheet to said second terminal.

' of insulation secured on the rear face thereof and having a holeregistering with the first-named hole, a headed and externally threadedhollow bushing engaging said serew-thrcaded hole in the hose-plate iorclan'iping the latter upon a panel, two complementary jack-terminals, atleast one of them i'nounted upon the rear face of saidlIlSultltlOll-SllGQll, and .a rearwai'dly-projectingcontact-springelectrically connected at the rear face of saidinsulation-sheet to the last-mentioned terminal.

T. A jack comprising a base-plate of metal having a hole, a sheet ofinsulation secured on the rear face thereof and 1 wing it holeregistering with the i'irst-nan'ied hole means comprising aneizternally-tlireaded hollow bushing engaging said plate con--centrically With said hole for clamping said base-plate upon a panel,two colnpleinentary jack-terminals, at least one of them mounted uponthe rear face of said insulationshect, and a rearwanlly-projcotingcontactsp ing electrically connected at the rear of said insulationsheet{at the lastmen tioned terminal.

8. A demountaole makeand-break attachment, comprising a metal platehaving a hole therethrongh, a sheet of insulation secured thereto andhaving a hole ll r ing with the first-named hole, a ollow sleeveprojecting from said holes and. adapt-- ed to he inserted through a holein a panelhoard, means upon said sleeve for clamping the above-namedparts i said panel-hoard, and two coin 'ilementary jack-terminalscarried respectively by said metal plate and said sheet of insulation.

9. The herein-described iwilt-structure, comprising a unitary metalplate provided of a telephone-plug, a sheet of insulation covering aportion of the surface of said plate, a jack-terminal and. a rearwardlyprojecting contact-spring secured at the rear surface of saidinsulation, one for each of said holes, and a complementary jackterminalsecured in electric contact to the rear face of said metal plate.

10. A telephone-jack comprising a flat metal baselate having a sheet ofinsulation secured to the rear face thereof, the two being provided witha hole for the in sertion of the telephone-plug, four short and flatcontact-springs locatedsubstantially ninety degrees apart at the rearface of said insulation, one of said springs being in electricconnection with said base-plate, and the other three being secureddirectly to said insulation and out of electric contact with saidbase-plate, the lat rearwardlyprojecting portions oi. said springsoccupying respectively planes which constitute suhstantially a square,the rear ends of two of saidsprings having lateral projections bent intoparallelism with and extending as inner ends between the outer rear endsof in in, the 3 51301 m z secured on the mar face th zr aa'vmg :1, holereglsii any; nth the hoie. a headed and QA'tm'naL 1 a lad .nuflowBushing engaging ;sa1d

.23 hfle in the base pl'ide "for 8.1: 122M331" upon a panel, a jack-,mtw in else-taxis conaiact with and projecting rozuwx ardiy xmrshei-t,a second $010k;

ante-Uri w said insuin- .ui m". eiectnc Contact with 51 1, and. :1rensrwaidly-pro i-

